Machine Trades Jobs: This job category consists off jobs regarding to the operation of machines that cut, bore, mill, abrade, print, and similarly work such materials as metal, paper, wood, plastics, and stone. A worker’s relationship to the machine is of primary importance. The more complicated jobs require an understanding of machine functions, blueprint reading, making mathematical computations, and exercising judgment to attain conformance to specifications. In less complicated jobs, eye and hand coordination may also be the most significant factor. Installation, assembly, repair, and maintenance of machines and mechanical equipment and weaving, knitting, spinning, and similarly working textiles are included.